Cheapest Price Indoor Aqi Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy

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Cheapest Price Indoor Aqi Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy Detail:

Real-time indoor air quality detection, single or combined measurement selection: PM2.5, CO2, TVOC, HCHO,Temperature and RH
3-color light indicates the range of the main measurement
Screen display optional

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EM21 embedded installation Indoor Air Quality Monitor Simple and elegant type

❑LED Tri-colored lights
❑Visible air quality level
❑Compact and simple design
❑Gather real-time data and display history chart via a software platform

EM21 embedded installation Indoor Air Quality Monitor Screen display type

Show the detailed air quality on the screen
Display the real time values and 24-hour average of PM2.5, TVOCs, CO2
With on/off touch button to turn off /turn on screen

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Technology Specifications

Specifications CO2 TVOC  PM2.5

 

Temp&RH

 

HCHO

 

sensor NDIR Metal oxide semiconductor Laser particle sensor

Light scattering method

High-precision digital integrated

Temperature and humidity sensor

Electrochemical Formaldehyde sensors
 

Measuring

range

400~5,000ppm 0~ 4.0mg∕㎥ 0~500μg∕㎥ Temp:-20℃~60℃

Humidity:0~99%RH

0~0.6mg/m3
Output Resolution 1ppm 0.001mg∕㎥ 1μg∕㎥ Temp:0.01℃ Humidity:0.01%RH

 

0.001mg∕㎥
Accuracy ±50ppm + 3% of reading

or 75ppm

<15% <15% Temp:±0.8℃ Humidity:±4.5%RH ±0.005mg/㎥+5% of reading

 

General Specifications
Detection Parameters(max.) PM2.5;CO2;TVOC;Temp&RH;HCHO Power Supply

24VAC/VDC±10%100~240VAC

Output (Optional)

 

RS485 (Modbus RTU)

WIFI @2.4 GHz 802.11b/g/n

RJ45 (Ethernet TCP) PoE power supply Optional

Shell material and IP level PC fireproof material

IP30

Operating

Environment

Temp:-10~60℃

Humidity︰0~99%RH

Overall Dimension 91.00mm*111.00mm*51.00mm
Storage Condition 0℃~50℃

0~70%RH

Installation standard Standard 86/50 pipe box (installation hole distance 60mm)

American standard pipe box (installation hole distance 84mm)

Understand your air quality at all times

❑View real-time and historical data through RS485 or cloud-based platform such as MyTongdy , in computer or mobile APP

❑Check out or download data to analyze your indoor air quality and identify the pollution source as frequently as you need

❑Handle your indoor air quality by control the fresh air system or purification equipment automatically

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Application scenarios

Widely used in commercial or residential spaces

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Models Guide

No. Model PM2.5 CO2 Temp&RH VOC HCHO Output Display Power Supply
1 EM21-B/S12C/D · ·       RS485  

 

 

 

 

B No display

S with display

C: 24VAC/VDC

D: 100~240VAC

2 EM21-B/S13C/D · · ·    
3 EM21-B/S15C/D ·   · ·  
4 EM21-B/S17C/D · · ·   ·
5 EM21-B/S18C/D · · · ·  
6 EM21-B/S22C/D · ·       WI-FI
7 EM21-B/S23C/D · · ·    
8 EM21-B/S25C/D ·   · ·  
9 EM21-B/S27C/D · · ·   ·
10 EM21-B/S28C/D · · · ·  
11 EM21-B/S32C/D · ·      
12 EM21-B/S33C/D · · ·     RJ45 Ethernet

(please contact our sales department for POE Power Supply)

13 EM21-B/S35C/D ·   · ·  
14 EM21-B/S37C/D · · ·   ·
15 EM21-B/S38C/D · · · ·  

 

We provide commercial air quality monitors

Including- indoor, in-duct, outdoor monitors

Help you build healthy indoor air quality 

Tongdy Sensing Technology Corporation

Address:Building 8, No.9, Dijing Rd., Haidian Dist., Beijing 100095, China

Website:www.tongdy.com

Email:info@tongdy.com

Phone:86 10 59738930


Product detail pictures:

Cheapest Price Indoor Aqi Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy detail pictures

Cheapest Price Indoor Aqi Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy detail pictures

Cheapest Price Indoor Aqi Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy detail pictures


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    5 Stars By Elsie from Finland - 2018.12.30 10:21
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